I'm most interested in keeping copies of the Sacred Scriptures, theology textbooks, etc.  I can see a time in the not-too-distant future where they'd start "editing" the Sacred Scriptures to remove "hate speech".

That's a bit extreme, and not likely to happen anytime soon. At least compared to this:

Editing famous, trusted Catholic books to be more friendly to Vatican II and the Conciliar Church, which has already happened after TAN Books was sold off. Much more subtle, much less blatant.

Or how about Angelus Press editing their library (+Lefebvre books etc.) to be less contradictory with their new orientation?

That is BOOKS IN PRINT being altered, so older copies are more faithful than newer-bought copies. Imagine what they could do with digital books! And of course if you don't own a book, it could always go out of print and then you'll never get one. Which also happened with TAN books. Several controversial, less popular titles were dropped. A few more were dropped due to financial/legal issues, like Attila Guimaraes's book.

Sacred Writ has been edited for millennia.

I'm most interested in keeping copies of the Sacred Scriptures, theology textbooks, etc.  I can see a time in the not-too-distant future where they'd start "editing" the Sacred Scriptures to remove "hate speech".

I agree, I collected, bought books to start a timeless family library. I’m paranoid about not being able to access them online anymore.

I noticed that changes to Catholic bibles are being made.   “ Hail, Mary” replaced with “greetings”.  St Luke.